Bernhabd eeahr



(No Model.) 2 Sheets-Sheet 2.

B. REAHR.

ICE CREAM FREEZER.

PatentedcDeo Eh/Z72 0,956 5/ w MMX W. n m

NiTRD STATES PATENT OFFICE.

BERNHARD REAHR, on BUFFALO, NEW YORK, A'ssioNoR or ONE-HALF T GEORGE N. PIERCE, on SAME PLACE.

ICE-CREAM FREEZER.

SPECIFICATION forming part of Letters Patent No. 269,710, dated December 26, 1882.

Application filed October 7, 1882. (No model.)

T 0 all whom it may concern Be it known that I, BERNHARD REAHR, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Ice-Cream Freezers; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, sin-h as will enable others skilled in the art to which it appertains to make and use the same,

relerence being had to the accompanying drawings,andtolettersorfiguresofreferenoemarked thereon, which form a part of this specification.

My invention consists in certain improve ments in ice-cream freezers, as follows: first,. an improved freezer in which more than one kind of ice-cream can be made at the same time; second, an improved freezer in which 2 the state of the cream being frozen can be ascertained at any time during the operation of freezing without stopping or interfering inany manner with such operation; third, an improved freezer in which the surface of contact 2 of the freezing medium is nearly double that of any of the freezers now in use for the same quantity of cream to be frozen; and, fourth, certain improved details of construction, which will be more fully hereinafter set forth and 0 claimed.

In the drawings, Figure 1 is an elevation of the freezer complete with portions broken away to show the interior construction. Fig. 2 is a central vertical section of Fig. 1. Fig. 3.

is a top plan view of the freezer. Fig. 4; is a top plan view of the freezer with the crank, its shaft, and the operatingcog-wheels thrown back out of the way and the hinged cover of the freezer removed. Fig. 5 is a top view of the cover and its hinged portion separated.

Figs. 6 and 7 are separate views of the stirring and scraping devices. Fig. 8 is a top plan view of the freezer with the hinged cover thrown open. Figs. 9,10,11,and 12 are other detail views. Fig. 13 is a partial section of the, cover, taken in the line a: 00, Fig. 5; and Fig. 141s a plan view of a modified form of freezer.

Referring to the drawings, a isthe usual ring and scraping devices are rotated, is arranged substantially as follows: Upon the top edge of the pail is secured the open pivot b, (more clearly shown in Fig. 12,) in which the curved lugs b b and shoulder 1) form the seat in which one end of the plate carrying the operating mechanism is adj ustably and removably located. The under face of the shoulder b rests upon the upper edge of the pail, and the extension I) is secured by nails or screws to the side of the pail. At a point diametrically opposite to this open pivot are attached two swinging rods, 0 0, upon whose screwthreaded ends are placed the thinnh-nnts c 0,

to be referred to hereinafter. d is the plate which carries the operating mechanism. hav- 7o iug at one end the opening (1, which adapts it to be placed in and swung upon the open pivot -b. At the other end of the plate are the two wings d 6?, having the notches d d for the reception of the swinging rods 0 0, which, with the thumb-nuts c c, serve to secure the plate d firmly in position upon the pail.

e is a horizontal shaft, which is revolved by means of the crank e in the lugs e 0 upon the plate cl. Upon the inner end of the shaft e is secured the vertical cog-wheel f, which meshes with the horizontal cog-wheel f',secured to the vertical shaft f This shaft f passes down loosely through an opening in the center of the plate d, and is removably secured against vertical displacement by means of the double socket-piece 9, into the upper socket of which the end of the shaftf is secured by setscrew g. This double socket-piece g revolves with the cog-wheel f, and by means of its 0 lower socket the stirring and scraping devices are operated in a manner which will be hereinafter described.

It is the large cylindrical can or compartment in which is placed the stirring and scrap- 5 I ing or agitating devices and the smaller interiorcompartment. Thiscanorcoinpartinent h is removably secured from revolving in the pail by means of the buttons h it, two or more, which rest in corresponding recesses in the bottom of thepail a. The bottom of this compartment h is provided with the circular seat k (see Fig. 10,) having the inner recesses, h if. k is the smaller cylindrical can or compartment, having at its bottom the outside lugs, k k, which, when the compartment k is in position, rest in the recesses 7L3 lbs of the circular seat If. It will be seen by the foregoing description that both of these cylindrical compartments can be easily and quickly removed, but are prevented, when in position, from revolviug during the freezing operation. The smaller compartment, Ir, isintended for the rer-eption of one kind of cream, and the space between it and the larger compartment. h, is similarly intended for the reception of a different kind of cream, both of which can be frozen by one and the same operation; or, if desired, thesmaliercompartment, 7t,can betilled with the freezing medium, as well as the space between the large compartment, h, and the pail 0t, thus making the surface of contact of the freezing medium nearly double that of the ordinary freezer for the satne quantity of cream to be frozen. If acid is employed as a freezing medium in the can It, such can should be tnade of glass or other non-corrosive material.

The stirring and scraping or agitating devices for the compartments h and It are shown separately in Figs. 6 and 7. I, Fig. 6, is the one intended for the space between the two compartments. Itconsistsoftwocircularrims, l and I, connected by the side bars, I and l, which not only serve as a part of the framework, but additionally perform the function of scrapers upon the outer surface of the small COHJPalttllEllt, b. Upon the bar l is the scraper 1 of usual construction, which removes the adhering cream from the inner surface of compartment h. Upon the bar I are located the stirrers l, of usual construction, which serve in their revolution to agitate the freezing cream. The outer surf-ace of the top of the circular rim lis cut away slightly to form the shoulder L and upon this shoulder l arcformed the lugs 1W the purpose of which will be hereinafter explained.

at (see Fig. 7) is the stirring and scraping device, of usual construction, for the compartment k. It has the stirrers m m and scraper m both located upon the central bar, m The upper end, m, of the bar m is made square to fit into a socket, as will more fully hereinafter appear, and the lower end, in, is made tapering, so as to revolve in a corresponding socket in the bottom of the compartment k.

Each of the agitators l and m can be cast in one piece, and the metal from which they are formed may be galvanized to prevent rustin The stirring and scraping devices, when in position in their respective compartments, are caused to revolve by the following means:

a (see Figs. 2, 9, and 11) is a circular connecting-piece, which communicates power from the double socket-piece g to thcstirring and scraping devicesland m. It has a circular recess, n, (see Fig, 9,) in its bottom portion, and in the walls of such recess are two slots, it", placed diametrically opposite each other. This connecting-piece n'is placed upon the shoulder l of the top circular rim, l,of the stirring and scraping device I, the lugs l' l resting in the slots n of the connecting-piece n. The upper portion of the part a is formed into a cup, n,

from the center of which rises the shaft n, having the square end a. This end a tits into the lower socket of the double socket-piece g, and the revolution of this portion 9 causes, as will clearly be seen, the revolution of the stirring and scraping device 1 without causing the revolution of the compartment k, the upper end of which fits loosely in the circular recess a. The upper square end, m, of the stirrer and scraper m fits into acorresponding recess, a, in the bottom of the part n, causing the revolution of this stirrer and scraper.

It will be clearly seen from the foregoing description that the stirrers and scrapers have rotary motion imparted to them simultaneously, while the com partments h and I: remain stationary.

0 is a cover for the compartment It, which is kept in place upon such conmartment by means ofthe circular flange 0. This cover is provided with the central opening, 0 for the reception of the shaft on of the part mand has the hinged portion 0 which is shown in Fig. 8 in open position, exposing the interior of the compartments h and k, and in Fig. 5 in detached position. The two parts are hinged together by means of the lugs 0 This hinged cover permits of an inspection of the cream beingfrozen without interferring with the operation of the stirrers and scrapers, as clearly shown in Fig. 8.

A sliding section might be used instead of the hinged section 0 The following means are employed to prevent any of the freezing medium-such as the salt-from passing down between the portions 0 0 of the cover and into the cream: The edge of the portion 0 which abuts against the part 0 is provided with the flange 1), (see Fig. 5,) asection of which is shown in Fig. 13. This flange 1) has the groove 11 extending through its entire length, and the straight portions 1) p are inclined downwarldy toward the circular portion 1), as shown in dotted lines in Fig. 11, which figure represents a front elevation of the portion 0 with the part 0 removed and the circular connecting portion n in its relative position to the cover. The circular portion p of the groove is provided with the holespp, two or more. which pass down through the cover immediately over the cup 10 in the part a, so that any foreign substance in a liquid state which passes through these holes 1) is caught and held in the cup at.

r is a vertical orifice in the portion n to permit of the escape of vapors, 850., from the compartment k. This orifice r is continued upward a sutficient distance, as shown in Fig. 2,

- to prevent the contents ofthe cup 11. from passing into the compartment 70.

A modification of my-invention is shown in Fig. 14,in which I have provided anadditional can, 8, placed in the compartment IL and surrou ndingthe compartmentk, the space between which and the compartment It being adapted for the reception of ice and salt or other freezing medium, the stirrers and scrapes, together with the other parts of the freezer, heingsubstantially thesame as has been herein before described.

My improved freezer, as has been shown and described, consists of parts which are all .removably connected,thusenabling it to be readilyput together for freezing purposes, and as readily taken apart to remove the frozen cream and for cleansing purposes.

The adjustmentand operation of the freezer are brietly as follows: The cans or compartments It and k are first placed in position in the pail and filled with the different creams to be operated upon. The stirrers and scrapers l and m are next inserted in their respective spaces. The circular connecting-piece n is placed in engagement with the ,stirrers and scrapers. The cover 0 0 is placed over the compartments and the portion 02 the central shaft, a of which passing loosely through such cover, after which the plate d and its operating mechanism are swung over until the lower socket in the double socket-piece is in engagement with the end n of the shaft n, in which position it and all the several parts of the freezer are held securely in position by means ot'thc swinging rods 00 and thumb-nuts 0'0. The freezing medium having been added, the freezer is put in operation by turning the handle e, which serves, with the intervening mechanism, to rotate the two stirrers and scrapers, while the cans or compartments remain stationary.

What I claim as of my invention is 1. An ice-cream freezer having anest of two or more cans or compartments provided with independent agitators, in which more than one kind of cream can be lrozen at the same time and by the same operating device, substatitially as shown and described.

2. An ice-cream freezer in which the cover for the stationary can or cans holding the cream or creams to be frozen is provided with an adjustable section so arranged as to permit an inspection of the cream during the freezing operation without interrupting such operation, substantially as shown and described.

3. An ice-cream freezer having two cans or compartments, one within the other, theinner one being adapted for the reception ofa freez ing medium, the space between the inner and outer cans being intended for the cream to be frozen, the outer surface of the larger can being surrounded by a freezing medium, substantially as shown and described.

4. An ice-cream freezer having a cover for the stationary can or cans holding the cream with means for catching and retaining any of the freezing medium which may pass through and below such cover, substantially as shown and described.

5. In an ice-cream freezer, the combination, with the cans or compartments It and k, arranged, as shown, in the paila,and their cover, of the separate agitating devices 1 and m, both rotated by the same agitating device, substantiallyas shown and described.

6. In an ice-cream freezer, in combination, the cans or compartments h and It, having in common a removable cover, the agitators l and m, and the circularconnecting device 71, adapted, as shown, to engage with and rotate the agitators l and m, the connecting device n being in turn rotated by suitable power, substantially as shown and described. i

7. In .an ice-cream freezer, in combination, the cans or compartments hand It, having in common a removable cover, the agitatorsland m, the circular connecting device a, adapted, as shown, to engage with and rotate the agitators l and m, the double socket-piece g, and the removable and adjustable plated, carrying the operating mechanism; all combined and operating substantially as shown and described.

8. In an ice-cream freezer, the agitator I, having the top and bottom circular rims, 1 l

and the side connecting-bars, l and l, the bar Z carrying the scraper l and the bar I carrying the agitators Z l, the top rim, 1, being adapted for engagement with a rotating medium, substantially as shown and described.

9. In an ice'cream freezer, the circular connecting' device n, having the recess or cup 91 and the shaft 11* in its upper portion, and the circular recess n, with its slots n n and socket n substantially as and for the purpose stated 10. In an ice-cream freezer, the circular connecting device 11, having the recess or cup n" and the shaft 11. in its upper portion, and the circular recess n,withits slots a n socket n, and orifice r passing up into the recess a, substantially as and for the purpose stated.

11. In anice-cream freezer, the cover 0, having the hinged section 0 the part 0 being provided with the fiangep, having'the recess or groove p p and the perforations 12 p, substantially as and for the purpose stated.

12. In an ice-cream freezer, the combination, with the pail a, provided with the. open pivot b and swinging rods 0 c, and thumb-nuts 0'0, of the plate (I, having the recess d at one end and the notches d d at the other, the plate d carrying the operating mechanism, arranged thereon. as shown, the whole operating as and for the purpose stated.

13. An ice-cream freezer consisting of the following instrumentalities, viz.: the pail a, having upon its top edge the open pivot b and IIC the swinging rods 0 c,with their thumb-nuts c In testimony n'hereofl have signed my name 0, the removably-adjnstable plate d, carrying to this specification in. the presence of two sub- IO the actuating mechanism, as shown and describing witnesses. scribed, the double socket-piece g, the cover BERNHARD REAHR 0 0 the circular connecting-piece n, the stirrers and scrapers I- and m, and the cans or i Witnesses: compartments h and Ir, all combined and npi OTTO HODDICK, crating in the manner shown and described. i \V. T. MILLER. 

